<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>漫画</title>
    <style>
        .baba{
            width: 50px;height: 50px;border: 1px solid red; margin: 100px auto;
            text-align: center;line-height: 50px;
            position: relative;
        }
        .baba  .baikuang{
            width: 300px;height: 200px;border: 1px solid #000;
            position: absolute;/*子绝父相*/
            bottom: -250px;left: -120px;
        }
    </style>
</head>
<body>
    <div class="baba">
        漫画
        <div class="baikuang"></div>
    </div>  
</body>
</html>